@import './base.css';
* {
  margin: 0px;
  padding: 0px;
}

html, body, #app{
  height: 100%;
}
ul {
  list-style: none;
}
ul::after{
  content:'';
  display: block;
  clear: both;

}
a{
  text-decoration: none;
}
.center {
  width: 1200px;
  margin: auto;
}